Speedometer is not working

2001 CHEVROLET 3500
75,000 MILES • 8.1L • V8 • 2WD • MANUAL
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BOBBY BOOSHEA
  • MEMBER
  • 1 POST
Was needing to know about the sensors on the side of the transmission. i have one on each side of it .
Feb 9, 2019 at 2:30 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

The most common cause is the vehicle speed sensor.

Do you have an Allision transmission? The 8.1 offered this option.

Roy
Feb 9, 2019 at 4:50 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Hello again,

I found this diagram for you.

Check it and see if you have this sensor at the rear of the transmission?

Roy
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Feb 9, 2019 at 4:53 AM
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